Ringed, Little Ringed and Kentish Plovers photo ID guide - BirdGuides
Common Ringed Plover - eBird
Ringed Plover Facts | Charadrius Hiaticula - The RSPB
Little Ringed Plover | Bird Identification Guide | Bird Spot
Breeding populations of Little Ringed Plover Charadrius dubius and Ringed Plover Charadrius hiaticula in the United Kingdom in 2007 | BTO - British Trust for Ornithology